Wxman, I'm interested in the particular problems you encountered, if the issues are the same as mine this would help us find a better solution as i would hate to see this camera go because of its lack or support.
One thing was a wiring issue. Image would get all distorted to where you couldn't recognize anything...Had to take it apart and when shoving in on some of the internal wires the picture would clear up to normal...put the screws back in, an hour later it was back to giving a distorted image. Wires just wouldn't stay in place and kept coming loose. On top of that, the zoom module the seller included inside the housing had a scratch on the sensor, so I had to replace it with another zoom module. During this replacement, I damaged the ribbon cable connecting the zoom module to the housing's internal boards..I also noticed the system would lose signal at random times and sometimes I could not get the pan/tilt to move at normal speed. Tried to give the seller the benefit of the doubt, but they suddenly seemed to no longer understand English, were ignoring messages, making offers to send replacement parts and then backing out. Apparently, the seller was just selling broken second-hand junk as they started getting bombarded with negative feedback from others about "received defective unit"...Their feedback rating on Aliexpress dropped to 33% in the following weeks. At this point, I realized that mine wasn't an isolated issue and that they were just scammers, so I filed a claim to return for a full refund.
Ordinarily, I would have lost out on the $80 to ship the unit back, but the postal service in China lost the package and the tracking never showed up as "delivered". Of course the seller naturally claimed to have never received it...This problem worked out to my benefit because the package was fully insured. After filing an insurance claim with the post office, I got back the camera value plus the shipping cost for the lost package. In the end, the ordeal didn't cost me anything but time and stress.
I did learn some valuable lessons though....First, I learned a lot about the internals of cameras and how to do some repairs....Second, I learned to never purchase an expensive item on Aliexpress unless there is a lot of positive feedback, not just on the seller's account, but on the specific item that I'm purchasing too. This seller had a good feedback rating when I initially made the purchase, but that's because they had been selling a lot of cheap items with little that could have gone wrong. There wasn't any feedback on the exensive PTZ camera and realize I should have waited until people were able to try out that particular unit and give positive feedback on it specifically before making that kind of purchase.